Chicago-Latrobe 42795 Y HSS 135° Split Point Drill Bit

Chicago-Latrobe 42795 Y Drill Bit

The Chicago-Latrobe 42795 is a jobber-length drill bit sized to letter Y with a decimal equivalent of .4040. It is made from high-speed steel with a TiAlN coating and features a 135-degree split point for self-centering starts. The bit is designed for non-coolant-through applications and has zero coolant holes. It suits general-purpose drilling in metal where a split-point geometry is preferred.

Suited for metalworkers needing a .4040 hole

This bit fits machinists and maintenance technicians who require a letter Y size in high-speed steel with a 135-degree split point for accurate hole placement without a centre punch. The TiAlN coating adds wear resistance in steel and cast iron. Buyers who need a different letter or fractional size, a coolant-through design, or a carbide substrate should select another tool. The fixed geometry does not suit applications demanding a specialised point angle for exotic alloys.

Decisive spec: 135-degree split point

The 135-degree split point determines whether this bit matches the drilling method required. It reduces walking on hard surfaces and lowers thrust compared with a standard point, making it the key factor for buyers choosing between point styles for their specific material and machine rigidity. If the process calls for a different point angle or a non-split geometry, this bit will not perform as intended.